/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * $Id: Match.hpp,v 1.1 2008/02/19 19:02:23 utke Exp $
 */

#if !defined(MATCH_HPP)
#define MATCH_HPP

// ---------------------------------------------------------------------------
//  Includes
// ---------------------------------------------------------------------------
#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/util/ArrayIndexOutOfBoundsException.hpp>
#include <xercesc/util/RuntimeException.hpp>

XERCES_CPP_NAMESPACE_BEGIN

/**
  * An instance of this class has ranges captured in matching
  */
  class XMLUTIL_EXPORT Match : public XMemory
{
public:

	// -----------------------------------------------------------------------
  //  Public Constructors and Destructor
  // -----------------------------------------------------------------------
	Match(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
	
  /**
  * Copy constructor
  */
  Match(const Match& toCopy);
  Match& operator=(const Match& toAssign);

	virtual ~Match();

	// -----------------------------------------------------------------------
	// Getter functions
	// -----------------------------------------------------------------------
	int getNoGroups() const;
	int getStartPos(int index) const;
	int getEndPos(int index) const;

	// -----------------------------------------------------------------------
	// Setter functions
	// -----------------------------------------------------------------------
	void setNoGroups(const int n);
	void setStartPos(const int index, const int value);
	void setEndPos(const int index, const int value);

private:
	// -----------------------------------------------------------------------
	// Initialize/Clean up methods
	// -----------------------------------------------------------------------
  void initialize(const Match& toCopy);
	void cleanUp();

	// -----------------------------------------------------------------------
    //  Private data members
    //
    //  fNoGroups
    //  Represents no of regular expression groups
	//		
    //  fStartPositions
    //  Array of start positions in the target text matched to specific
	//		regular expression group
	//
	//	fEndPositions
	//		Array of end positions in the target text matched to specific
	//		regular expression group
	//
	//	fPositionsSize
	//		Actual size of Start/EndPositions array.
    // -----------------------------------------------------------------------
	int fNoGroups;
	int fPositionsSize;
	int* fStartPositions;
	int* fEndPositions;
    MemoryManager* fMemoryManager;
};

/**
  * Inline Methods
  */

// ---------------------------------------------------------------------------
//  Match: getter methods
// ---------------------------------------------------------------------------
inline int Match::getNoGroups() const {

	if (fNoGroups < 0)
		ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::Regex_Result_Not_Set, fMemoryManager);

	return fNoGroups;
}

inline int Match::getStartPos(int index) const {

	if (!fStartPositions)
		ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::Regex_Result_Not_Set, fMemoryManager);

	if (index < 0 || fNoGroups <= index)
		ThrowXMLwithMemMgr(ArrayIndexOutOfBoundsException, XMLExcepts::Array_BadIndex, fMemoryManager);

	return fStartPositions[index];
}

inline int Match::getEndPos(int index) const {

	if (!fEndPositions)
		ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::Regex_Result_Not_Set, fMemoryManager);

	if (index < 0 || fNoGroups <= index)
		ThrowXMLwithMemMgr(ArrayIndexOutOfBoundsException, XMLExcepts::Array_BadIndex, fMemoryManager);

	return fEndPositions[index];
}

// ---------------------------------------------------------------------------
//  Match: setter methods
// ---------------------------------------------------------------------------
inline void Match::setStartPos(const int index, const int value) {

	if (!fStartPositions)
        ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::Regex_Result_Not_Set, fMemoryManager);

	if (index < 0 || fNoGroups <= index)
		ThrowXMLwithMemMgr(ArrayIndexOutOfBoundsException, XMLExcepts::Array_BadIndex, fMemoryManager);

	fStartPositions[index] = value;
}

inline void Match::setEndPos(const int index, const int value) {

	if (!fEndPositions)
        ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::Regex_Result_Not_Set, fMemoryManager);

	if (index < 0 || fNoGroups <= index)
		ThrowXMLwithMemMgr(ArrayIndexOutOfBoundsException, XMLExcepts::Array_BadIndex, fMemoryManager);

	fEndPositions[index] = value;
}

XERCES_CPP_NAMESPACE_END

#endif
